Convergent evolution of ramified antennae in insect lineages from the Early Cretaceous of Northeastern China.

ABSTRACT: Antennae are important, insect sensory organs that are used principally for communication with other insects and the detection of environmental cues. Some insects independently evolved ramified (branched) antennae, which house several types of sensilla for motion detection, sensing olfactory and chemical cues, and determining humidity and temperature levels. Though ramified antennae are common in living insects, occasionally they are present in the Mesozoic fossil record. Here, we present the first caddisflies with ramified antennae, the earliest known fossil sawfly, and a scorpionfly also with ramified antennae from the mid-Lower Cretaceous Yixian Formation of Northeastern China, dated at 125 million years ago (Ma). These three insect taxa with ramified antennae consist of three unrelated

SUBMITTER: Gao T 

PROVIDER: S-EPMC5046901 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature